Inking roll and method of and apparatus for renewing surface of same



AQ B. DAvls Aug. 3 1926.

lhKING ROLL AND METHOD OF AND APPARATUS FOR RBNEWING SURFACE OF SAME Filed August 8, 1923 MU .m

.N RME.

'on and contraction, but

Patented Aug. 3, 1926.

UNITED STATES 1,594,356 PATENT OFFICE.

anni-un simon nlavis. or srnrnormnn, eine. mmenom. .urn amrnon or am arrana'rus iron smrnwme summon or anni. Application lied August l, 1928. ierlal Ic. 056.817.

This invention relates to 4an improved method of treating the ink rolls of trintin presses whereby the surfaces of e rol may be renewed at a comparatively small oost.

The rolls of prin formed of e commercial su ce known as roller composition must be frequently re newed because of the fact that the surfaces in a com aratively short time become checked an scored, and in man cases when overheated the body of the roll sin .1 Rolls made of soft rubber oompoun have been used to some extent, such rolls having the advan e that they do not expanden contract un er weather conditions, as do rolls of roller composition, but these rubber rolls are unsatisfactory because of the fact that the surfaces thereof do not have that nice allinity for ink n d by roller wmposition, and for that reason have been used only as ink distributing rolls and not for4 the inkmg rolls prgier.

I have discover however, that soft rubber rolls which have been treated with a thin coating of roller composition, not only advantages of free from have the saine nice allnity-for ink found in the rolls of 'roller composition, so that a' rubber roll so treated may be used satisfactorily for inking rolls as well as for distributing rolls. I have found that when the roller composition rfaces of auch rubber rolls becomech ,suchsurfaeesmaybeienewed at a trilling expense by my improved method. t

By my method it is also feasible .to treat ro, er composition rolls in a wa to renew the surface and make auch ro perform the work of inking in a manner as satisfactory as found in a roll, the entire of composition of which has been renew in the usual way. I have also found that old roller composition rolls which have been covered with abrio can be similarly tieated bly a? lying the coating of compotion to t e a ric.

Another form of in roll to which my improved method is ap cable isthat type of roll which consists o a core of vulcanized oil rovided with an outery skin of vulcanizedp rubber. Such a roll has many of the advantages possessed by a roll made of roller composition and by Blroviding the outer sqrface of the rubber 'nwith a thin lilm of p when soft rubber rolls and other similar forms of rolls with roller com 'tion in a way to render such rolls entirefv suitable for use as g rolls in presses or high class work, and to be able to renew the surfaces of euch rolls from time to time in au inexpensive manner; and it is also a further objeo of the invention to treat the surfaces of worn rolls 10 of roller composition, or similar rolls covered with fabric, in a wa to provide them with an entirely new ace of roller comwhich will perform the work'of i g in a manner which have had the composition entirely re new ed.

A further and more' specific object is to provide a method of the character referred to by which alight coa sition may be applied to rolls b subecting the rolls to the comtggsition in eated iquid form and allowing composition to freely drain from the rolls so as to leave `deposited on the rolls but a com atively thin film of the composition whi may be readil removed when worn by subjection to heate water and the roll reooated:

.A further obect of the invention is to devise a meth for the pu which will enable me to emp oy apparatus of simple and chea construction for carryin out the methoc as satisfactory as rolls 1l of rollercompo- 80 described oo ferring to the accompanying drawu gg. 1 is aside elevation of one form of apparatus which I employ in out m invention.

`g. 1' is an end view of the. apparatus.

Fig. 2 is a longitudinal section of a portion of a rubber roll' treated according to my im roved method.

ig. 8 is a lo 'tudinal sectionqf a Ezrtion of a roll o rubber composition ewise treated.

Fig. 4 is a longitudinal section of a portion of a roll of rubber composition covered with fabric which has been treated by my method.

Referring to the drawings, 1 ie resents a suitable frame supported on legs At one end of this frame is secured a pair of uplll rights 3 connected by cross-bars 4 to which is adjustably connected by bolts 5 and their wing nuts (i a central support 7; this suprt havin a slotted opcnin 8 throu mich the lts extend virherebg the hcgilll of the support muy bc rc ulated'. This support T has at its up r en a bearing 9 to re ceive the upper en of thc shaft l0 of a roll R, the lower end of the shaft being sup ported in a bearing 11 projecting from a supporting member l2 which is adplstably connected with the frame by bolts 0 which project through the horizontal web of the side members of the frame, which are preferably of angle iron; the web of each side momber being provided with a series of openings (not shown) by which the bearing member 11 may he adjusted to or from the suportin member l so us to accommodate oo s of di erent lengths. A trough 13 having strips 14 is supported from the side members of the frame and the upper cross-bar rcspectively.

The bearings 9 and 11 are so stioned as to hei ht as to give to the ro which has been p d in position in the apparatus a pronounced tilt or incline, and a crank 15 aving a eet-screw 16 is connected to the upper endof the shaft 10 of the roll for the pu'plose of rotating the roll in the bearings.

e roller composition which I employ {.o trtat the rolls lis of an well knowitil frlu'mu' a, e nncipa ingre ients ot w ic i nre gluel masses, glycerine and venice of turpeutine. A formula which I have found sotxsfactory is le follows: 8%- lbs. Coopers best lax glue, 2 gallons best unclarificd mo. lassen, 1 int glycerine, and 2 ounces.A venice of tur ne.

These ingredients are mixed and heatedA and whileiu a heated li uid state are poured or flooded upon the roll R from a suitable container 17 which may be in the forni of the ordinary sprinkling can with a spout 18. While the molten com tion in heated xstate is being poured, e roll is revolved slowly and the container 17 gradually moved down the roll so as to insure covering the entire surface of the roll with the composition. The ma'or rtion of the com osition which is pou or coded upon the ro l drains into the trough 13 and runs intoa bucket or other receptacle 19 at the lower end of the trough, from whence it may be conveyed back to the heatin tank. After the entire surface of the rol) been treated the roll is removed from the apparatus and placed in a rack in e vertical or substantie ly vertical position for further draining and drying:I

As a result of this treatment a ve t in film of theroller composition is place upon the roll surface whether it be the surface of s rubber roll or the surface of a roll of roller composition, either bare or covered with fabric.

In covering a roll of roller composition with fabric one satisfactory method which I h uve employed is the use of the ordina friction tape wound about the surfaceof e roll in u spiral direction, although another method wlnc is egually satisfactory is to draw a stizking o fabric over the surface of the ro In Fig. 2 there is illustrated a roll 20 formed of soft rubber compound to which has been aplplied a lm 21 of roller composition. In ig. 3 a roll 22 of roller composition is shown to which has been directly applied a hlm of roller composition. In l' ig. 4 is shown another roll 28 of roller composition wrupped or otherwise surrounded with fabric 24 aud a thin film 21 of roller composition applied to the fabric. For the sake of clearue the thickness of the film of roller composition shown in these ti res has been exa rated. The lm of er composition eft upon the roll after draining is ve thin compared to the diameter of the rol a film /1000 of an inch in thickness being found satisfactory for the pursm a1- though the thickness of the lilm w vary somewhat according to the tem ture of the heated liquid composition w en poured upon or otherwise applied to the rol.- It is my intention, however, to h'est the'eomposition to such au extent that the maler portion thereof will freely drain from the roll when it is looded thereon leaving but a comparatively thin lilm of the composition deposited upon the roll.

The ends of the rolls are bevelled or rounded ns shown so' as to avoid the accumulation of com osition at the ends of the rolls and a possi le co uent formation of streaks of composition ue to tha over-flowin of this accumulation.

lo some weather conditions it is also desirable to Preheat the roll before surfacing so as to prev ant possible chilling of tha composition when applied thereto and before it ias an opportunity o! properly draining therefrom.

I am aware thatithasbecnnproposed tocoat soft rubber rolls and also ro o roller comosition with a coating of roller composition, ut in al1 of these attempts so far as I am infomed the coatin of roller composition xs applied b a mol lng recess and is of a com arative y thick aracter. B my met od of lioodin the roller composition to the roll in a hestc liquid state and then allowing the com `tion to drain from the roller while in t at state but a comparatively thin film of composition is left upon the mll which answers the purpose as an inkin surface equally as well as a thick coatingan e'ects a material saving in the roller com position when renewed which is a very important item in printing establishments employing a large number of presses because lll lli

of the fact that the waste of the composition upon renewal is with my method comparatively small. Further, with my method, no expensive molds are required, as is true with other methods of coating, it only being necessary to provide a simple form of apparatus suitable to enable the roll to be subjected to the heated liquid com osition of a character which will permit t e composition to readily drain from the roll, such as the apparatus shown. Other a paratus for accomplishing this result may employed, however, and it is to be understood that my invention contemplates any method of applying the composition to the rolls which will permit drainage of the composition therefrom so as to leave deposited on the roll but a film or thin coating of composition.

When the composition coating becomes worn, it 'may be readily removed by subjecting the roll to a bath of hot water, after which a new coating may be applied in the manner described.

This method also has the advantage that the surface of the roller will always be composed of fresh material for the reason that new, fresh composition may beused at a small expense, it having been the practice in renewing old composition rolls by the old method, to use the same material over and over again to save ex ense.

Having thus described my invention, I claim V l. The method of coating an inking roll for recoating or completin said roll, which consists in pouring over t e surface of the roll a coating material or composition in a molten state in excess of the amo t needed for said coating, and permitting t e surplus material to drain from the roll, leaving a film of composition thereon.

2. The method of coating an inking roll for recoating or completing said roll, which consists in pouring over the surface of the roll while in an inclined position a coating material or composition in a molten state in excess of the amount needed for said coating and allowing the surplus composition to drain in an endwise direction from the roll, leaving a film of composition thereon.

3. The method of coating an inking roll for recoating or completing said roll, which consists in pouring over tlie surface of the roll a coating material or composition in a molten state 1n excess of the amount needed for said coatin then mounting the roll in a vertical position and allowing the surplus material to drain in an endwise direction from the roll, leaving a film of composition thereon.

4. In an inking roll, a main body of comparatively soft material, an outer coating of roller composition, said outer coating being of a film-like character formed by pouring over the surface of said comparatively soft material a coating composition in a molten state in excess o the amount needed for said coating, and permitting the excess of the composition to drain in an endwise direction from said roll.

5. In an inking roll, a main body of rubberor other non-expansible and non-contractible material, and an outer coating of rubber composition, said outer coating being of a film-like character formed b pouring over the surface of said main body a coating material in a molten state in excess of the amount needed for said coating, the main body being held in an inclined position whereby the surplus composition will drain in an endwise direction from said main body.

6. In an apparatus of the character described, a sup orting frame and bearin on said frame For supporting an inking ro l whereby said roll may be revolved in said bearings in a position to ex ose the same to a pouring container for ro er composition to permit said composition to be poured thereon, said bearings being arranged so as to support said roll in an inclined position to permit drainage of said composition from said roll, said bearin s being also arranged to permit the ready lnsertion and removal of the rolls therefrom.

7. In an inking roll, a main body of comparatively soft material havin its sides rounded, an outer coating of rol er com osition, said outer coating being of a ti mlike character formed by pouring over the surface of said main bodya coating material in a molten state in excess of the amount needed for said coating the excess Vmaterial being allowed to drain from said main body and the rounded ends of the roll preventing the accumulation of said material at those points.

In Itestimony whereof, I have hereunto set my hand this 20th day of July 1923.

ARTHUR BYRON DAVIS.

of the fact that the Waste of the composition upon renewal is with my method comparatively small. Further, with my method, no expensive molds are required, as is true with other methods of coating, it only being necessary to provide a simple form of apparatus suitable to enable the roll to be silbjected to the heated liquid com osition of a character which will permit t e composition to readily drain from the roll, such as the apparatus shown. Other a paratus for accomplishing this result may se employed, however, and it is to be understood that my invention contemplates any method of applying the composition to the rolls which will permit drainage of the composition therefrom so as to leave deposited on the roll but a film or thin coating of composition.

When the composition coating becomes worn, it 'ma be readily removed by subjecting the rollrv to a bath of hot water, after which a new coating may be applied in the manner described.

This method also has the advantage that the surface of the roller will always be coinposed of fresh material for the reason that new, fresh composition may berused at a small expense, it having been the practice in renewing old composition rolls by the old method, to use the same material over and over again to save expense.

Having thus described my invention, I claimz- 1. The method of coating an inking roll for reeoating or completing said roll, which consists in pouring over t e surface of the roll a coating material or composition in a molten state in excess of the amount needed for said coating, and permitting the surplus material to drain from the roll, leaving a film of composition thereon.

2. The method of coating an inking roll for recoating or completing said roll, which consists in pouring over the surface of the roll While in an inclined position a coating material or composition in a molten state in excess of the amount needed for said coating and allowing the surplus composition to drain in an endwise direction from the roll, leaving Ia film of composition thereon.

3. The method of coating an inking roll for recoatng or completing said roll, which consists in pouring over the surface of the roll a coating material or composition in a molten state in excess of the amount needed for said coatin then mounting the roll in a vertical position and allowing the surplus material to drain in an endwise direction from the roll, leaving a film of composition thereon.

4. In an inking roll, a main body of comparatively soft material, an outer coating of roller composition, said outer coating be ing of a film-like character formed by pouring over the surface of said comparatively soft material a coating composition in a molten state in excess o the amount needed for said coating, and permitting the excess of the composition to drain in an endwise direction from said roll.

5. In an inking roll, a main body of rubber or other non-expansible and non-contractible material, and an outer coating of rubber composition, said outer coating being of a film-like character formed b pouring over the surface of said main iiody a coating material in a molten state in excess of the amount needed for said coating, the main body being held in an inclined position whereby the surplus composition will drain in an endwise direction from said main body.

6. In an apparatus of the character described, a sup orting frame and bearin on said frame Por supporting an inking ro l whereby said roll may be revolved in said bearings in a position to explose the same to a pouring container for ro er composition to permit said composition to be poured thereon, said bearings bein arranged so as to support said roll in an inclined position to permit drainage of said composition from said roll, said bearin s being also arranged to permit the ready insertion and removal of the rolls therefrom.

7. In an inking roll, a main body of comparatively soft material having its sides rounded, an outer coating of rol er com sition, said outer coating bein of a fi mlike character formed by pouring over the surface of said main bodyia coating material in a molten state in excess of the amount needed for said coating the excess material being allowed to drain from said main body and the rounded ends of the roll preventing the accumulation of said material at those points.

In testimony whereof, I have hereunto set my hand this 20th day of July 1923.

ARTHUR BYRON DAVIS.

DISCLAIMER INKING Roni. AND METHOD or Patent dated August llcivbv enters this disclaimer to claims 4, 5, (i, and 7 of said specification.

iri'al Gazette August 2. 1.9.38.1

DISCLAIMER 1,594,3.3G.-Arthur Byron Dar, Springfield, Ohio. INKiNG ROLL AND METHOD 0F AND APPARATUS FOR RBNEWiNG SURFACE 0F SAME. Patent dated August I5, 1926. Disclaimer lml July 2, 1938, by the patentfee.

Herebv enters. this disclaimer to claims 4, 5, and 7 of said specification.

'[c'al Gazette August 2. 1.9381 

